Truck has no balls. please Help

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Truck has no balls. please Help

Postby Collers9640 » Fri Nov 17, 2017 2:46 pm

I’m finishing up my project truck or so I thought. My truck will start, run and drive but has no balls and I’m clueless as to what the problem is. Does anyone have any troubleshooting tips or things I can check because I’m lost.

- I verified that I have the correct banjo bolt on the injection pump return line.
- I have a new lift pump installed
- I have a new fuel filter installed
- I have turned up the fuel Screw
77’ W200 Cummins- Auto, BHAF, 4” Exhaust
91.5 W250 Cummins Conversion- PS I/C, pump maxed, Red Oak Diesel Injectors, Coolertubz, pump advanced 1/8", 3" elbow, 3200 Spring, Piston Lift Pump, KDP fixed, DennyT pin, HX35, 4in Downpipe, BHAF, Heater Grid Delete, Alcan springs, Bilstein Shocks
1984 D350 Crew Cab (Future Cummins Project)
Collers9640
fuel screw!!!!
 
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Re: Truck has no balls. please Help

Postby Begle1 » Fri Nov 17, 2017 3:32 pm

Stock is pretty castrated. Fuel screw should help though. How many balls is it missing?

Basic diagnostics first:
How is your boost pressure?
Are you blowing black smoke?

If you have no boost with black smoke, then you have an air problem.

If you have no boost without black smoke, and your engine is slow coming up in RPM, then you probably have a fuel problem.
If you have no boost and no smoke, but your engine is coming up in RPM fast, then it sounds like you have a transmission problem.


All that said, probably a timing issue, maybe a sheared timing key on the pump. :lol:
1990 D-250 Regular Cab: Tweaked injection pump, built transmission, a cataclysmic charlie foxtrot of electronics, the most intense street-ran water injection system in the country, and some more unique stuff.
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Begle1
14mm rotor
 
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Re: Truck has no balls. please Help

Postby Richie O » Fri Nov 17, 2017 4:48 pm

Pete's truck doesn't have any balls either. :cheers:
1989 W250 727, 3.07 L/S, S300, P/S Intercooler, Stans exaust, Pump adjustments, 127k miles,297 hp
1993 W250 extended cab, rag, 4.10 l/s, 6x16's, HTT 62/71/14 piston l/p, Isspro EV series tach, fuel pressure, boost, oil pres, water temp, volt, pryo, 132k/ 301 hp
1992 W250 with NV4500, 3.54's, 16cm 60mm GDS H1C, ground stock cone, Isspro tach, pryo, boost, fuel pressure, slow, rusty, dented,180k
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Re: Truck has no balls. please Help

Postby Collers9640 » Sun Nov 19, 2017 10:24 am

Haven’t got boost gauge hooked up but there is no smoke and the engine revs just fine
Pump was just rebuilt and the trans is a new nv4500
77’ W200 Cummins- Auto, BHAF, 4” Exhaust
91.5 W250 Cummins Conversion- PS I/C, pump maxed, Red Oak Diesel Injectors, Coolertubz, pump advanced 1/8", 3" elbow, 3200 Spring, Piston Lift Pump, KDP fixed, DennyT pin, HX35, 4in Downpipe, BHAF, Heater Grid Delete, Alcan springs, Bilstein Shocks
1984 D350 Crew Cab (Future Cummins Project)
Collers9640
fuel screw!!!!
 
Posts: 165
Joined: Wed Feb 24, 2010 4:25 pm
Location: Charleston SC
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Re: Truck has no balls. please Help

Postby Begle1 » Sun Nov 19, 2017 10:41 am

Okay, manual means there aren't any slippage problems.

You can try playing around with timing to see if that makes an improvement.

How much did you adjust the fuel screw? How much adjustment do you have left in the low-idle screw?

Turbo boost pressure is probably the best indicator of consistent engine performance. Stock engines make like 15-17 PSI, and balls don't start to be had until around 25 PSI.

Do you have a pyrometer in the exhaust manifold?
1990 D-250 Regular Cab: Tweaked injection pump, built transmission, a cataclysmic charlie foxtrot of electronics, the most intense street-ran water injection system in the country, and some more unique stuff.
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Begle1
14mm rotor
 
Posts: 1919
Joined: Sat Jan 06, 2007 5:31 pm
Location: Capo Beach, California
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Re: Truck has no balls. please Help

Postby Collers9640 » Sat May 26, 2018 7:59 pm

It turned out to be the small pin that rides on the fuel pin inside the pump that was the problem.
The pin was stuck.
77’ W200 Cummins- Auto, BHAF, 4” Exhaust
91.5 W250 Cummins Conversion- PS I/C, pump maxed, Red Oak Diesel Injectors, Coolertubz, pump advanced 1/8", 3" elbow, 3200 Spring, Piston Lift Pump, KDP fixed, DennyT pin, HX35, 4in Downpipe, BHAF, Heater Grid Delete, Alcan springs, Bilstein Shocks
1984 D350 Crew Cab (Future Cummins Project)
Collers9640
fuel screw!!!!
 
Posts: 165
Joined: Wed Feb 24, 2010 4:25 pm
Location: Charleston SC
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